Question about JVC AV-27D303 27" TV

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Dark picture The picture has gotten so dark that it is very hard to see. None of the adjustments on the menu seem to work. This problem started about a month ago but by adjusting the brightness the picture was watchable. No more. Thanks, Jes

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Re: dark picture

How old is the TV? More than 6-7 yrs? Then it's time to do a trade in. But if you are very attached to it, get a Technician to recondition the Picture Tube. This may give it life for another couple of years. You could also ask a technician to check the DC filter Capacitor for the HT line to the Video Drive circuits. Over time this capacitor dries out and also causes a darkening of the picture. It is normaslly a 100 mfd 160V capacitor.

Posted on Sep 08, 2006

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I have a JVC tv only 1 year old and the picture is getting dark.

have you tryed adjusting the picture in the menu section! this may help!! or on back of tv is adjusters those may help as well.

Mar 24, 2009 | JVC AV-27920 27" TV

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Screen is too dark

with a flashlight at the back of the set often times there is an adjustment you can make WITHOUT having to open the set!!!

look for a little hole in the back of the plastic cabinet labeled SCREEN then with a flat screwdriver holding only the plastic handle, insert it into the hole and SLOWLY rotate until the screen brightens up until it is watchable.

This is compensating for age in the picture tube. you may get a few day or a few more years! of a much better picture.

If you start seeing some thin lines on the screen then back off you have gone too far. Do this adjustment with the brightness and contrast controls on the menu turned up all the way.

it is also safe to play with the focus adjustment right next to the screen if thing seem a little blurry. you will need two people one to watch from a distance for best picture.

Feb 10, 2009 | GE 31GT660 TV

1 Answer

Toshiba television is black picture

If this just happens while vcr is playing. Check the vcr. Did you happen to adjust its brightness and contrast settings. If things doesn't change. Then if this model is a crt type could be adjustment on its flyback transformer is needed tweaking slowly its screen knob or tweaking also its focus knob until you got it to the level of viewing it correctly.

But be aware, hazardous voltages inside it. Or let th technician set it for you, its a minor adjustment.

Jan 09, 2009 | Toshiba 36AF41 36" TV

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The Contrast and Brightness on tv appears to be dark.

If this is a CRT-based TV and it's been played most of the time, you may have a bad picture tube, especially if strong red colors bleed to the right. CRT's dim with use, unlike LCD or plasma. But it could also be trouble in the video circuits - none of this falls into the DIY category, unfortunately. High voltage involved, unless you're comfortable around it and want to try turning up the screen controls inside the TV. If you do, let me know - but "no response at all" from the external adjustments points to a more serious problem.

Dec 10, 2008 | Toshiba 36AF41 36" TV

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Picture getting dark

My jvc 27" tv was so dark I could hardly see any night scenes, even with the bright all the way on. If you push the sleep button, let go, then hold down the video and display (together), the service menu will come on. Scroll down to #7 (too dark) and adjust the brightness there. Works immediately. Good luck.

Nov 29, 2008 | JVC AV-27530 27" TV

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Picture is too dark

How many years is your TV now? Usually TV has its life span, there comes a time that it happens. And need to look for a technicians, cause some of theme can still be repair by adjusting the brightness inside your TV.

Oct 19, 2008 | JVC AV-27530 27" TV

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TV picture too dark

your screen adjustment needs to be turned up just a touch (flyback)

Aug 01, 2008 | JVC AV-27D302 27" TV

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Picture is dark

sitnlisten - yes it does appear your pix tube is getting weak,but we may be able to turn up the flyback alittle to brighten up the picture.If you take the back off you will see the flyback-large black unit with a wire going to the round rubber cap on the back of the pix tube.Look at the flyback there are usually 2 adjusters one marked focus the other screen,just turn up the screen a little bit at a time.If you turn this up too much you will wind up with retrace lines on the screen.You may also want to check the pcboard ass'y for a sub bright adjust,and same thing small adjustments.If this don't help your pix tube may be too far gone.I hope this helps. cooltek Feb.1/08

Feb 14, 2008 | Zenith C27A24T 27" TV

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Dark Picture

Hi there!
The knobs you refer to, are those perhaps the knobs on the board or knobs on the flyback transformer? None of these knobs should be turned. They are preset to the factory standard and if a fault occurs the fault should be addressed, not adjustments to pots. I would suggest checking all the caps in the power supply, Line stage and video section. It may also be the video processor(in the area of the tuner section). Check for caps which are rounded at the top. This is common for dark picture. Please note: There is on average about 15000V running through a TV when switched on, please be careful and unplug when changing components or refer to a repair technician. Good Luck, Jus004

Jun 06, 2007 | JVC AV-32FA44 32" TV

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Tv still dim after adjusting

sounds like you may have gotten a pwer surge and blew out the regulator in the set. If you know how to trouble shoot regulator curcuitds then it could be as simple as the str type regulator. If you dont then open the set and see what module the set has it would start with a 9-something as it should be inside the back cover and then contact and see what they charge to repair the entire pcb or the exchange of the module. As Zenith sets are made to be repaired in house by quilifyed repair stations IN hOUSE. Good luck to ya.

Apr 27, 2006 | Zenith B25A02Z TV

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